Abstract: Production of composites was done by mixing the
filler and matrix. The common matrix used to produce composite is plastic ore
with types of poly propylene, poly ethylene and others. To know the characteristics
of composite boards made from recycled plastic type poly ethylene so this
research was conducted. This research aims to create a composite board made of solid
waste sawdust and straw as a filler and recycled plastics as the matrix and to
find out more details of the influence of variable solid waste types and ratio
of solid waste weight and plastic toward the quality of the composite board
product. Composite board manufacturing process was carried out by hot press
method at a temperature of 145oC for 20 minutes. The composite board
products are tested on value of hardness, tensile strength, and thermal value.
The results showed that the use of sawdust as a filler resulted the composite
hardness value that is better (R79,5) compared with straw (R67) at a ratio of
filler composition: matrix of 80:20 respectively. The use of sawdust also gives
the value of tensile strength of 6.86 MPa that is better than the using a straw
that valued of 3.62 MPa at composition ratio of filler: to matrix (60:40).
Largest amount of heat needed to melt the composite boards are 31.19 J/g and
14.02 J/g at composition ratio sawdust: recycled plastics of 80:20 and at
composition ratio straw: recycled
plastics of 80:20,
respectively. Visually composite
board with a composition of sawdust:plastic HDPE 50:50
looks better with bright colors and shiny.
Keywords: Composite, Solid waste, Plastic, Matrix,
Filler, Poly ethylene
Penulis: Farid Mulana, Hisbullah, Iskandar
Kode Jurnal: jpkimiadd110018
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